Which statement about the use of learning curves is BEST?

a. It may be more likely to see learning curve effects in construction than in research and development.
b. Every worker performing an identical task will exhibit the same learning effect.
c. Learning curve effects stay constant across projects.
d. A job that is substantially re-engineered will have no disruption of its learning curve.

i believe the answer is: streets and roads

public property refers to the property that can be used by all legal citizens in a certain country. the public property was created and maintain using the government budget that allocated specifically for it. the budget itself come from the citizen's income tax payment.

answerjointly by the fed and by the behavior of individuals who hold money and of banks in which money is held;

answer(d) all of the choices are correct;